Suction cup



FIG. 1 is a front elevational view of a new design of a suction cup;

FIG. 2 is a left side elevational view, the right side elevational view being a mirror image thereof, also with reference to FIG. 1;

FIG. 3 is a rear elevational view with reference to FIG. 1; and,

FIG. 4 is an elevational view, taken along line 4--4 in FIG. 1. 

The ornamental design for the "suction cup", as shown and described. 